Objective: To transition into renewable energy field while safeguarding our environment

Underwater noise caused by anthropogenic activities, could be a serious threat for numerous marine species, including invertebrates, fish, and marine mammals. The effects and mitigation of offshore construction, particularly driving of monopiles into the seabed, is a critical part of environmental impact assessment. In a study undertaken by Bailey et al. (2010) modelled injuries to the auditory organs of bottlenose dolphins were predicted only within 100 m of a construction site, but behavioural changes, such as avoidance, had a predicted effect in a range as great as 50 km. Multiple mitigation measures can be applied to minimize any harmful impact on marine mammals, including a 'soft start' technique that gradually increases the sound pressure, giving the mobile organisms the opportunity to swim away. Additional measure is a so called 'bubble curtain system'. Continuous stream of air bubbles are released from a hose surrounding a pile, rising from the bottom of the water to the surface. The unwanted sound energy is absorbed in the bubble wall, reducing the noise by up to 30 decibels.